一、先创建一个名为font的.css文件,然后引入自定义css

// 字体样式大小
.ql-snow .ql-picker.ql-font .ql-picker-label[data-value="SimSun"]::before,
.ql-snow .ql-picker.ql-font .ql-picker-item[data-value="SimSun"]::before {
    content: "宋体";
    font-family: "SimSun";
}
.ql-snow .ql-picker.ql-font .ql-picker-label[data-value="SimHei"]::before,
.ql-snow .ql-picker.ql-font .ql-picker-item[data-value="SimHei"]::before {
    content: "黑体";
    font-family: "SimHei";
}
.ql-snow
    .ql-picker.ql-font
    .ql-picker-label[data-value="Microsoft-YaHei"]::before,
.ql-snow
    .ql-picker.ql-font
    .ql-picker-item[data-value="Microsoft-YaHei"]::before {
    content: "微软雅黑";
    font-family: "Microsoft YaHei";
}
.ql-snow .ql-picker.ql-font .ql-picker-label[data-value="KaiTi"]::before,
.ql-snow .ql-picker.ql-font .ql-picker-item[data-value="KaiTi"]::before {
    content: "楷体";
    font-family: "KaiTi";
}
.ql-snow .ql-picker.ql-font .ql-picker-label[data-value="FangSong"]::before,
.ql-snow .ql-picker.ql-font .ql-picker-item[data-value="FangSong"]::before {
    content: "仿宋";
    font-family: "FangSong";
}
.ql-snow .ql-picker.ql-font .ql-picker-label[data-value="Arial"]::before,
.ql-snow .ql-picker.ql-font .ql-picker-item[data-value="Arial"]::before {
    content: "Arial";
    font-family: "Arial";
}
.ql-snow
    .ql-picker.ql-font
    .ql-picker-label[data-value="Times-New-Roman"]::before,
.ql-snow
    .ql-picker.ql-font
    .ql-picker-item[data-value="Times-New-Roman"]::before {
    content: "Times New Roman";
    font-family: "Times New Roman";
}
.ql-snow .ql-picker.ql-font .ql-picker-label[data-value="sans-serif"]::before,
.ql-snow .ql-picker.ql-font .ql-picker-item[data-value="sans-serif"]::before {
    content: "sans-serif";
    font-family: "sans-serif";
}

.ql-font-SimSun {
    font-family: "SimSun";
}
.ql-font-SimHei {
    font-family: "SimHei";
}
.ql-font-Microsoft-YaHei {
    font-family: "Microsoft YaHei";
}
.ql-font-KaiTi {
    font-family: "KaiTi";
}
.ql-font-FangSong {
    font-family: "FangSong";
}
.ql-font-Arial {
    font-family: "Arial";
}
.ql-font-Times-New-Roman {
    font-family: "Times New Roman";
}
.ql-font-sans-serif {
    font-family: "sans-serif";
}

/* 字号设置 */
/* 默认字号 */
.ql-snow .ql-picker.ql-size .ql-picker-label::before,
.ql-snow .ql-picker.ql-size .ql-picker-item::before {
    content: "14px";
}
.ql-snow .ql-picker.ql-size .ql-picker-label[data-value="14px"]::before,
.ql-snow .ql-picker.ql-size .ql-picker-item[data-value="14px"]::before {
    content: "14px";
    font-size: 14px;
}

.ql-size-14px {
    font-size: 14px;
}

.ql-snow .ql-picker.ql-size .ql-picker-label[data-value="16px"]::before,
.ql-snow .ql-picker.ql-size .ql-picker-item[data-value="16px"]::before {
    content: "16px";
    font-size: 16px;
}

.ql-size-16px {
    font-size: 16px;
}

.ql-snow .ql-picker.ql-size .ql-picker-label[data-value="18px"]::before,
.ql-snow .ql-picker.ql-size .ql-picker-item[data-value="18px"]::before {
    content: "18px";
    font-size: 18px;
}

.ql-size-18px {
    font-size: 18px;
}

.ql-snow .ql-picker.ql-size .ql-picker-label[data-value="20px"]::before,
.ql-snow .ql-picker.ql-size .ql-picker-item[data-value="20px"]::before {
    content: "20px";
    font-size: 20px;
}

.ql-size-20px {
    font-size: 20px;
}

.ql-snow .ql-picker.ql-size .ql-picker-label[data-value="22px"]::before,
.ql-snow .ql-picker.ql-size .ql-picker-item[data-value="22px"]::before {
    content: "22px";
    font-size: 22px;
}

.ql-size-22px {
    font-size: 22px;
}

.ql-snow .ql-picker.ql-size .ql-picker-label[data-value="26px"]::before,
.ql-snow .ql-picker.ql-size .ql-picker-item[data-value="26px"]::before {
    content: "26px";
    font-size: 26px;
}

.ql-size-26px {
    font-size: 26px;
}

.ql-snow .ql-picker.ql-size .ql-picker-label[data-value="28px"]::before,
.ql-snow .ql-picker.ql-size .ql-picker-item[data-value="28px"]::before {
    content: "28px";
    font-size: 28px;
}

.ql-size-28px {
    font-size: 28px;
}

.ql-snow .ql-picker.ql-size .ql-picker-label[data-value="30px"]::before,
.ql-snow .ql-picker.ql-size .ql-picker-item[data-value="30px"]::before {
    content: "30px";
    font-size: 30px;
}

.ql-size-30px {
    font-size: 30px;
}

二、在app.vue引入font.css文件，进行覆盖默认样式

@import "./assets/css/font.css";

三、在script标签中引入quill

import * as Quill from "quill";

四、在script标签中进行注册

//quill编辑器的字体
var fonts = [
    "SimSun",
    "SimHei",
    "Microsoft-YaHei",
    "KaiTi",
    "FangSong",
    "Arial",
    "Times-New-Roman",
    "sans-serif"
];
var Font = Quill.import("formats/font");
Font.whitelist = fonts; //将字体加入到白名单
Quill.register(Font, true);

// 自定义字号的大小
var sizes = [false, "16px", "18px", "20px", "22px", "26px", "28px", "30px"];
var Size = Quill.import("formats/size");
Size.whitelist = sizes;

五、在data中进行配置

 editorOption: {
                theme: "snow",
                modules: {
                    toolbar: [
                        ["bold", "italic", "underline", "strike"], // toggled buttons
                        ["blockquote", "code-block"],
                        [{ header: [1, 2, 3, 4, 5, 6, false] }],
                        [{ size: sizes }],// 配置字号
                        [{ color: [] }, { background: [] }], //显示背景字体颜色
                        [{ font: fonts }], //显示字体选择
                        [{ align: [] }], //显示居中
                        ["image", "video"]
                    ]
                },
            },

效果: